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// * Licensed to the Apache Software Foundation (ASF) under one or more contributor license agreements.  See the NOTICE file *
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// *  http://www.apache.org/licenses/LICENSE-2.0                                                                             *
// *                                                                                                                         *
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package org.apache.juneau.json;

import static org.apache.juneau.internal.StringUtils.*;

import org.apache.juneau.*;
import org.apache.juneau.internal.*;
import org.apache.juneau.json.annotation.*;

/**
 * Metadata on classes specific to the JSON serializers and parsers pulled from the {@link Json @Json} annotation on
 * the class.
 */
public class JsonClassMeta extends ClassMetaExtended {

	private final Json json;
	private final String wrapperAttr;

	/**
	 * Constructor.
	 * 
	 * @param cm The class that this annotation is defined on.
	 */
	public JsonClassMeta(ClassMeta<?> cm) {
		super(cm);
		this.json = ReflectionUtils.getAnnotation(Json.class, getInnerClass());
		if (json != null) {
			wrapperAttr = nullIfEmpty(json.wrapperAttr());
		} else {
			wrapperAttr = null;
		}
	}

	/**
	 * Returns the {@link Json @Json} annotation defined on the class.
	 * 
	 * @return The value of the annotation, or <jk>null</jk> if not specified.
	 */
	protected Json getAnnotation() {
		return json;
	}

	/**
	 * Returns the {@link Json#wrapperAttr() @Json.wrapperAttr()} annotation defined on the class.
	 * 
	 * @return The value of the annotation, or <jk>null</jk> if not specified.
	 */
	protected String getWrapperAttr() {
		return wrapperAttr;
	}
}
